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If the difference between the roots of t...

If the difference between the roots of the equation `x^(2)+a x+1=0` is less than `sqrt(5)`, then the set of possible values of a is

A

`(3, oo)`

B

`(-oo,-3)`

C

`(-3,3)`

D

`(-3, oo)`

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The correct Answer is:
C
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